Yeah it was his stupid "playing with your food" shit where he decided to use it as an excuse to scarf down Jr's toaster strudels. I think he also did it with pizza rolls or something as well.
There have been other times where he pretends to give a shit about Jr, and that's any time he can come up with an excuse to "cook" something, or there will be food there, like Jr's wedding, or jr's flag football game with the church chili, or when he can have Tammy drive Jr to the wendys for fat on the go and pretend to care because Jr liked spongebob as a kid, etc.
And remember, Jr is the kid that he actually likes. He tried to kill the other one.